Migrated several tests from blink to V8 repository.

test/webkit/mod-crash.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 // 1.  Redistributions of source code must retain the above copyright
 //     notice, this list of conditions and the following disclaimer.
 // 2.  Redistributions in binary form must reproduce the above copyright
 //     notice, this list of conditions and the following disclaimer in the
 //     documentation and/or other materials provided with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+"This test checks that n % 0 doesn't crash with a floating-point exception."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+shouldBe("2 % 0", "NaN");
 
+var n = 2;
+shouldBe("n % 0", "NaN");
 
+function f()
+{
+    return 2 % 0;
+}
+
+shouldBe("f()", "NaN");
+
+function g()
+{
+    var n = 2;
+    return n % 0;
+}
+
+shouldBe("g()", "NaN");
+
+// Test that reusing a floating point value after use in a modulus works correctly.
+function nonSpeculativeModReuseInner(argument, o1, o2)
+{
+         // The + operator on objects is a reliable way to avoid the speculative JIT path for now at least.
+    o1 + o2;
+
+    var knownDouble = argument - 0;
+    return knownDouble % 1 + knownDouble;
+}
+function nonSpeculativeModReuse(argument)
+{
+    return nonSpeculativeModReuseInner(argument, {}, {});
+}
+
+shouldBe("nonSpeculativeModReuse(0.5)", "1");